org.slf4j slf4j-parent 1.5.2 4.0.0 org.slf4j jcl104-over-slf4j org.slf4j jcl-over-slf4j As it now supports JCL versions 1.0.4, 1.1 and 1.1.1, the jcl104-over-slf4j module has been renamed as jcl-over-slf4j.